Update (03/2011): Since our tests were performed in 2007, the results from the table above may be outdated. At RWTH Aachen University, we keep on using our AVM BlueFRITZ! USB v2.0 adapters, and are very happy with it. We can only encourage you to do compatibility tests on your own. An up-to-date list of Bluetooth adapters that work with the NXT in general can be found here: ​http://thenxtstep.blogspot.com/2011/01/we-need-your-bluetooth-experience.html